PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-17:58:00
G02     36.3           53.1               16.7 +/-    1.57      20.3 +/-    1.57  0.030 / 0.050
G05     142.1          64.1               19.8 +/-    0.42      21.7 +/-    0.42  0.050 / 0.040
G06     56.2           13.5               11.3 +/-    2.20      29.1 +/-    2.20  0.030 / 0.040
G12     195.7          63.1               16.5 +/-    0.65      18.3 +/-    0.65  0.030 / 0.040
G20     198.8          31.1               20.3 +/-    1.45      34.8 +/-    1.45  0.030 / 0.030
G25     285.5          58.2               15.2 +/-    1.04      17.6 +/-    1.04  0.030 / 0.030
G29     312.3          34.5               13.3 +/-    1.61      21.3 +/-    1.61  0.060 / 0.070